Alcohol tester



FIG. 1 is a front perspective view of an alcohol tester showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings depict portions of the alcohol tester that form no part of the claimed design. 

CLAIM The ornamental design for an alcohol tester, as shown and described. 